The following information obtained from UNAVCO's online DOI system: (https://www.unavco.org/data/doi/search/search.html) GULFNET GPS Network - HVHS-Hahnville High School P.S. Start: 29-Jan-2004 End: 08-Jul-2004 Dokka, Roy K., 2004, GULFNET GPS Network - HVHS-Hahnville High School P.S., UNAVCO, GPS/GNSS Observations Dataset, https://doi.org/10.7283/T5CV4FTH